menuItemIndices.addActionListener(new ActionListener() {
@Override
public void actionPerformed(final ActionEvent e) {
EvaluationDemoToolBar.this.eventLock.lock();
try {
final IndexJoin indexJoin = (IndexJoin) graphWrapper
.getElement();
final Tuple<Vector<String>, Vector<Vector<String>>> left = EvaluationDemoToolBar.this.getTable(indexJoin
.getLba()[0]);
final Tuple<Vector<String>, Vector<Vector<String>>> right = EvaluationDemoToolBar.this.getTable(indexJoin
.getLba()[1]);
final JTable leftTable = CommentLabelElement.getTable(
left.getSecond(), left.getFirst(),
EvaluationDemoToolBar.this.operatorGraphViewer.getOperatorGraph());